Ore-separator.



E.TORREYL ORE SEPABATOR. I APPLICATION FILED AUG-9, 1912.

1,155,292. Patented Sept. 28, 1915.

MVTAZSSES COLUMBIA PLANOORAPH 60., WASHINGTON, D. c.

EDWARD TORREY, OF THETFORD MINES, QUEBEC, CANADA. 7

ORE-SEPARATOB.

Specification of Letters Patent.

Patented Sept. 28, 1915.

Application filed August 9, 1912. Serial No. 714,269.

To all whom it may concern Be it known that I, EDWARD Tommy, of Thetford Mines, in the Province of Quebec, Canada, have invented certain new and useful Improvements in Ore-Separators; and I do hereby declare that the following is a full, clear, and exact description of the same.

This invention relates more particularly to asbestos ore separators adapted to treat crushed ore to separate the fiufl'ed or opened asbestos fibers from the rock and from the as bestos which has not been fluffed or opened in the crushing process.

The invention has for its object to provide an apparatus of this type which will be cheaper to construct and operate, more efficient in operation and less liable to damage the asbestos fibers than those heretofore known, and which will also successfully separate ore withoutqthe necessity of subjecting the latter to asthorough drying as has heretofore, been necessary, and without as heretofore fillingthe air with dust in the neighborhood of the mill. 1

For further comprehension, of the invention and of the objects and advantages thereof reference will be had'to the following description and appended claims andtothe accompanying drawings forming part of this specification in which similar reference characters indicate the same parts and wherein Figure 1 is a vertical sectional viewillustrating diagrammatically the apparatus; Fig. 2 is an enlarged side view partly in vertical section of a portion of the apparatus and looking in the same direction as Fig. 1; Fig. 3 is a horizontal section on the line 33 Fig.2; Fig. 4 is a detail side elevation of. the rebound rack; and Fig. 5. is a View, similar to Fig. 1, of a modification.

In my invention I provide means whereby the crushed ore containing both the fiufled and unfluffed fiber maybe caused to impact against a suitably disposed surface, causing a rebound of the harder particles, 2'. c. the rock and unflutfed asbestos,which are carried by their rebound to a position away from, or separated from,-the fluffed fibers.

The preferred apparatus for-accomplishing the separation as above set forthcomprises a chute inclined slightly to the vertical as shown and having unbroken 'side walls 2 and front wall 3, the rear-wall being constituted largely by the rebound devices upon which the ore falls, or against which it impacts. These rebounddevices, which I term rebound racks, each comprises a series of in chned strips or narrow plates 4 preferably of sheet metal (or other material suitable to cause a rebound of the rockyparticles therefrom). extending across fromside wall to side wall and arranged, as clearly shown 1n the drawings, in a louver or stepped formation with each strip'overlapping the one below it on the inside and spaced slightly therefrom, these strips being secured at their ends upon angle irons 5which are secured in turn to the side walls 2. These rebound racks are inclined forwardly and downwardly as shown with respect to the chute and are arranged in a series one below the other from top to bottom of the chute'in echelon or stepped formation, the bottom of each rack being connected to the top of the adjacent one by plates 6 which complete the rear wall of the chuteand pre vent air being drawn into the latter and interfering with the-action of the apparatus. A second similar row of reboundracks is arranged in front of the rear row, the spaces 8 secured to the side walls 2 by angle irons 9 and which are preferably arranged at a greater angle to the vertical than the re boundrracks to incline downwardly and outwardly therefrom (the angle of inclination of these plates 8 beinghere shown as the same as that of each individual strip of the rebound rack). These plates serve to sepa rate the rocky material from'th'e opened fiber. Projecting inwardly from the front wall 3 are aseries of battle plates 10 disposed slightly above the lower ends'of the plates 8, these baffle plates serving to break the fall of the rock down the take-OE and so prevent unnecessary wear.

The chute may be supported by any suitable frame, being here shown as supported at intervals by the floors ll of the building plates v p in which the chute is located andthrough H y The. ore is fed me comparatively thin falls the rocky material and unfiufied fiber,

when they impact "against the strips 4, are

caused to rebound from the rear racks and through the openings between the front racks and onto the adjacent lower front racks and from the front row of racks the rocky material rebounds over the take-off plates. The material, as it falls down the chute, maybe collected by any suitable de-' vices arranged atthe bottom of the chute, the material falling in three streams; the concentrates falling 'betweenthe' front and rear racks, middlings between the front racksiand the take-off plates, and tailings between the take-off plates and the front wall of the chute,

In Fig.5 I have illustrated diagrammatically; a modifiedarrangement in which a cor- Ill-gated sheet -metal plate 12 forms .the back of the: chute and-constitutes the rebound rack, a series of downwardly and outwardly inclined take-off plates 13 being disposed in frontuof TSIlGh rack, therchute having the usualside walls 2 and front wall 3.

What'I claim isas follows: 7

' l.'1An ore separator. comprising a chute 1 Y having .twowor 'more rebound devices disarating-theamaterialrebounding therefrom having a. :series of separating devices, each posed'laterally: across. the chute, each of such devicescomprising a plurality of plates arranged" louver :fo'rmation :and means disposed-laterally'beyond such devices for sepfrom the :remainder of-the 2 ore.

2. ':An ore separator comprising. a V Y chute of :said series including :two or more 'rebound devices-disposed laterally across the chuteyrthe rebound devices of one series beingaar'ranged in "staggered" relation to the devices-of another series.

3. An ore separator=comprising a chute having a series ofseparating devices, each arranged in louver formation, and said :de-

vices'ibeing s0 spaced thateach after the fir-stwrecerves part of the material rebound- .7 ingfrom the laterally preceding device, and

a take-off "plate" adjacent to the inclined rebound devices, such take-off plate be'ingincline'd a't a greater angle to th'e vertical than the rebound devices. 1 w V 5. An iore separator comprising a chute having a series of' separating devices, each oil-said seriesqincluding two ormore rea plate and adapted to break the fall bound devices disposed laterally across the chute and each comprising a plurality of plates arranged in louver formation, and said devices being so spaced that each after the first receives part of the material rebounding from the laterally preceding device, the rebound devices of one series being arranged in staggered relationto the devices of another series; and a take-off plate adjacent to each laterally disposed series," for separating the material rebounding therefrom from the remainder of the ore.-

6. An ore separator comprising a chute having a series of separating devices, each of said series including two or more rebound devices disposed-laterally across the chute and each comprising a plurality of plates arranged in louver formation, the rebound devices-of one series being arranged in staggered relation to thedevices of another series, a take-off plate adjacent-toeach laterally disposed series, for separating the material rebounding therefrom from the remainder of the ore "and'a bafiie plate-disposed'above the lower end of each take-off of material downthe latter". I v

I 7. An ore separator comprising a chute having two or more-rebound devices disposed laterally across the chute, each of such devices comprising a plurality of 7 plates a rranged in louver formation, a takeoff plate adjacent such rebound devices; and'a ba'iile plate above the lower end of the takesofl plate and adaptedto break the fall of mate} rial down-the latter. f a

8. An ore separator comprising a chute inclined to the vertical, a series of rebound racks arranged one below the other in ec'he- 1011 toincline downwardly and forward with respect to'the chute, each-ofsuch racks comprising a plurality of strips extending across the chute and arranged in a louver format1on',-wa1lplates closing the spaces'be tween adjacent ones of the-said racks, a series of separating plates disposed in front v of the-said racks and having a greater inclination tothe verticalrthansu'ch racks, and

bafi leplates projectinginwardly from the r front wall. of the chute toward such -sepa rating plates. I

9. An ore separatorcomprising a chute inclined to thevertical, a series of rebound racks arranged one below the other in eche comprising a plurality of strips extending across 'thechute and arranged 1n a louver formation, a second-series-of similarrre bound racks arranged in front of the first mentioned series, w all plates closing the spaces between adjacent ones of thefirst mentione'd-s'eries'of racks, a series" ofseparating plates disposed in front of the sec= ond-series of racksa'nd-having-a greaterin clination to the vertical than such racks, and baflie plates projecting inwardly from the front wall of the chute toward such sepaating plates.

10. An ore separator comprising a chute having two or more inclined rebound devices disposed laterally across the chute, each of such devices comprising a plurality of plates arranged in louver formation and said devices being so spaced that each after the firstreceives part of the material rebounding from the laterally preceding device, and a take-off plate adjacent to the inclined rebound devices.

11. An ore separator comprising a chute having a separating apparatus comprising an inclined rebound device, an inclined take off plate in front ,of the rebound device and a baffle plate in front of and disposed slightly above the lower end of the take-off 20 plate.

12. An ore separator comprising a chute, a series of rebound racks arranged one below the other in echelon to incline downwardly and forward with respect to the chute, each of such racks comprising a plurality of strips extending across the chute and arranged in louver formation wall plates closing the spaces between adjacent ones of said racks and separating plates disposed in front of said racks.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDWARD TORREY.

Witnesses:

ALEXINA JoNoAs, H. Ross.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. i 

